Incl. Anthony Quinn (Kiril Lakota), Laurence Olivier (Piotr Ilyich Kamenev), Oskar Werner (Fr. David Telemond), David Janssen (George Faber), Vittorio De Sica (Cardinal Rinaldi), Leo McKern (Cardinal Leone), John Gielgud (The Elder Pope), Barbara Jefford (Dr. Ruth Faber), Rosemary Dexter (Chiara), Frank Finlay (Igor Bounin), Burt Kwouk (Peng), Arnoldo Foà (Gelasio), Paul Rogers (Augustinian), George Pravda (Gorshenin), Clive Revill (Vucovich), Niall MacGinnis (Capuchin Monk), Marne Maitland (Cardinal Rahamani), Isa Miranda (The Marchesa), Gerald Harper (Brian), Leopoldo Trieste (Dying Man's Friend), Peter Copley (English Cardinal), Arthur Howard (English Cardinal), Jean Rougeul (Dominican), John Frederick (American Cardinal), Åke Lindman (soldier releasing Lakota), Dom Moor (Polish Cardinal), Alfred Thomas (African Cardinal).